So use half the surface area formula: SA=2πr^2 and plug in what you already know
since you don't know the radius yet, solve for it using the circumference
C=2πr
514.96=3.14(2)r
82=r
SA=2π(82)^2
SA=6.28(6724)
SA=42,226.72
so your answer is 42,226.72 yards squared
Jin Dynasty which was in China and for east africa I cant find or remember anything from their the closest is the Islamic empire.
In recent time, the aforementioned issues were replaced with
discrimination, slavery and genocide of many Native American. Slavery had been
one of the biggest problems in the United States that had rooted to racial discrimination
and segregation among the citizens of the country as well as it contributes to
genocide to many Native American families that were “civilized” by the current
culture.
